Connection Diagram Using The Sto-Compatible Drive System - Mitsubishi Electric M70V Series Connection Manual

4.2.11.2 Connection diagram using the STO-compatible drive system

STO (Safe Torque Off) is a function to execute the gate shutdown by drive unit's internal circuit.
This function can be substituted for one of the two contactors that were used for the redundant power shutdown.
However, the STO function can be substituted for one of the contactors.
Power supply
CN9
CN24
CN23
L11
L21
L1 L2 L3 G
Drive unit
Door open/close
check sensor
24V
EMG
24V
MC
Contactor
M70V Series Connection Manual
4.2 Connection of Control Unit
EMG
NC Control
unit
EMG
RIO
DOOR1
Remote I/O
unit
MC_dp1
AC reactor NFB
T
S
R
121